PreferenceFragmentCompat 在初始化时崩溃
PreferenceFragmentCompat crashes on initalization
我用 ViewPager 创建了一个应用程序。
当我进行调试构建并在我的 phone 上进行测试时，一切正常。 （不是模拟器）
但是当我构建一个 release .apk 并安装它时，PreferenceFragmentCompat 的 addPreferencesFromResource(R.xml.preferences); 使应用程序崩溃。
PreferenceFragmentCompat - Android Developers
ApplicationSettingsFragment.java:
package hu.t_bond.homecontroller.Fragments;
import android.os.Bundle;
import android.support.v7.preference.PreferenceFragmentCompat;
import hu.t_bond.homecontroller.Launcher;
import hu.t_bond.homecontroller.R;
public class ApplicationSettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
getPreferenceManager().setSharedPreferencesName(Launcher.SETTINGS_NAME);
addPreferencesFromResource(R.xml.preferences);
}
@Override
public void onCreatePreferences(Bundle bundle, String s)
{
}
}
res/xml/preferences.xml
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<CheckBoxPreference
android:key="AutoUpdatesEnabled"
android:title="@string/auto_updates_enabled"
android:summary="@string/auto_updates_enabled_description"
android:defaultValue="true" />
</PreferenceScreen>
以及崩溃报告：
10-26 14:20:07.661 17763-17890/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: hu.t_bond.homecontroller, PID: 17763
android.view.InflateException: Binary XML file line #2: Error inflating class PreferenceScreen
at android.support.v7.preference.p.a(PreferenceInflater.java:261)
at android.support.v7.preference.p.a(PreferenceInflater.java:280)
at android.support.v7.preference.p.b(PreferenceInflater.java:289)
at android.support.v7.preference.p.a(PreferenceInflater.java:161)
at android.support.v7.preference.p.a(PreferenceInflater.java:117)
at android.support.v7.preference.q.a(PreferenceManager.java:115)
at android.support.v7.preference.j.b(PreferenceFragmentCompat.java:366)
at hu.t_bond.homecontroller.b.a.d(ApplicationSettingsFragment.java:18)
at android.support.v4.b.o.h(Fragment.java:1942)
at android.support.v4.b.ac.a(FragmentManager.java:1040)
at android.support.v4.b.ac.b(FragmentManager.java:926)
at android.support.v4.b.o.c(Fragment.java:882)
at android.support.v4.b.an.b(FragmentStatePagerAdapter.java:152)
at android.support.v4.view.ViewPager.a(ViewPager.java:1104)
at android.support.v4.view.ViewPager.a(ViewPager.java:552)
at android.support.v4.view.ViewPager.a(ViewPager.java:514)
at android.support.v4.view.ViewPager.b(ViewPager.java:946)
at android.support.v4.view.dw.onChanged(ViewPager.java:2910)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.bo.c(PagerAdapter.java:276)
at hu.t_bond.homecontroller.w.c(Launcher.java:948)
at hu.t_bond.homecontroller.Launcher.a(Launcher.java:521)
at hu.t_bond.homecontroller.q.onClick(Launcher.java:663)
at android.view.View.performClick(View.java:4789)
at android.view.View$PerformClick.run(View.java:19881)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]
at java.lang.Class.getConstructor(Class.java:531)
at java.lang.Class.getConstructor(Class.java:495)
at android.support.v7.preference.p.a(PreferenceInflater.java:248)
at android.support.v7.preference.p.a(PreferenceInflater.java:280)
at android.support.v7.preference.p.b(PreferenceInflater.java:289)
at android.support.v7.preference.p.a(PreferenceInflater.java:161)
at android.support.v7.preference.p.a(PreferenceInflater.java:117)
at android.support.v7.preference.q.a(PreferenceManager.java:115)
at android.support.v7.preference.j.b(PreferenceFragmentCompat.java:366)
at hu.t_bond.homecontroller.b.a.d(ApplicationSettingsFragment.java:18)
at android.support.v4.b.o.h(Fragment.java:1942)
at android.support.v4.b.ac.a(FragmentManager.java:1040)
at android.support.v4.b.ac.b(FragmentManager.java:926)
at android.support.v4.b.o.c(Fragment.java:882)
at android.support.v4.b.an.b(FragmentStatePagerAdapter.java:152)
at android.support.v4.view.ViewPager.a(ViewPager.java:1104)
at android.support.v4.view.ViewPager.a(ViewPager.java:552)
at android.support.v4.view.ViewPager.a(ViewPager.java:514)
at android.support.v4.view.ViewPager.b(ViewPager.java:946)
at android.support.v4.view.dw.onChanged(ViewPager.java:2910)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.bo.c(PagerAdapter.java:276)
at hu.t_bond.homecontroller.w.c(Launcher.java:948)
at hu.t_bond.homecontroller.Launcher.a(Launcher.java:521)
at hu.t_bond.homecontroller.q.onClick(Launcher.java:663)
at android.view.View.performClick(View.java:4789)
at android.view.View$PerformClick.run(View.java:19881)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
我使用的是最新的库：
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.android.support:preference-v7:23.1.0'
有人可以告诉我我做错了什么吗？谢谢
尝试在您的 java 代码中添加此构造函数：
PreferenceFragmentCompat(){
this.super();
// a code
}
因为你导入了android.support.v7.preference.PreferenceFragmentCompat，所以你需要<android.support.v7.preference.PreferenceScreen .../>和<android.support.v7.preference.CheckBoxPreference .../>。它看起来像这样：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.preference.CheckBoxPreference
android:key="AutoUpdatesEnabled"
android:title="@string/auto_updates_enabled"
android:summary="@string/auto_updates_enabled_description"
android:defaultValue="true" />
</android.support.v7.preference.PreferenceScreen>
有关这些的更多信息 new preference types v7 支持库支持。
编辑
而不是重写默认的 onCreate(Bundle) 方法，但你应该只重写 onCreatePreferences(Bundle, String):
@Override
public void onCreatePreferences(Bundle bundle, String s) {
addPreferencesFromResource(R.xml.preferences);
}
OP 说他在构建 APK 文件时使用了 ProGuard。
如 this 错误报告所述
Make sure your proguard configuration contains a line like this:
-keep public class * extends android.support.v7.preference.Preference
这可能是问题所在，虽然我不确定。
修复了最新 androidx 的所有混淆器问题
-keep public class * extends androidx.preference.* { *;}
我用 ViewPager 创建了一个应用程序。 当我进行调试构建并在我的 phone 上进行测试时，一切正常。 （不是模拟器） 但是当我构建一个 release .apk 并安装它时，PreferenceFragmentCompat 的 addPreferencesFromResource(R.xml.preferences); 使应用程序崩溃。 PreferenceFragmentCompat - Android Developers
ApplicationSettingsFragment.java:
package hu.t_bond.homecontroller.Fragments;
import android.os.Bundle;
import android.support.v7.preference.PreferenceFragmentCompat;
import hu.t_bond.homecontroller.Launcher;
import hu.t_bond.homecontroller.R;
public class ApplicationSettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
getPreferenceManager().setSharedPreferencesName(Launcher.SETTINGS_NAME);
addPreferencesFromResource(R.xml.preferences);
}
@Override
public void onCreatePreferences(Bundle bundle, String s)
{
}
}
res/xml/preferences.xml
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<CheckBoxPreference
android:key="AutoUpdatesEnabled"
android:title="@string/auto_updates_enabled"
android:summary="@string/auto_updates_enabled_description"
android:defaultValue="true" />
</PreferenceScreen>
以及崩溃报告：
10-26 14:20:07.661 17763-17890/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: hu.t_bond.homecontroller, PID: 17763
android.view.InflateException: Binary XML file line #2: Error inflating class PreferenceScreen
at android.support.v7.preference.p.a(PreferenceInflater.java:261)
at android.support.v7.preference.p.a(PreferenceInflater.java:280)
at android.support.v7.preference.p.b(PreferenceInflater.java:289)
at android.support.v7.preference.p.a(PreferenceInflater.java:161)
at android.support.v7.preference.p.a(PreferenceInflater.java:117)
at android.support.v7.preference.q.a(PreferenceManager.java:115)
at android.support.v7.preference.j.b(PreferenceFragmentCompat.java:366)
at hu.t_bond.homecontroller.b.a.d(ApplicationSettingsFragment.java:18)
at android.support.v4.b.o.h(Fragment.java:1942)
at android.support.v4.b.ac.a(FragmentManager.java:1040)
at android.support.v4.b.ac.b(FragmentManager.java:926)
at android.support.v4.b.o.c(Fragment.java:882)
at android.support.v4.b.an.b(FragmentStatePagerAdapter.java:152)
at android.support.v4.view.ViewPager.a(ViewPager.java:1104)
at android.support.v4.view.ViewPager.a(ViewPager.java:552)
at android.support.v4.view.ViewPager.a(ViewPager.java:514)
at android.support.v4.view.ViewPager.b(ViewPager.java:946)
at android.support.v4.view.dw.onChanged(ViewPager.java:2910)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.bo.c(PagerAdapter.java:276)
at hu.t_bond.homecontroller.w.c(Launcher.java:948)
at hu.t_bond.homecontroller.Launcher.a(Launcher.java:521)
at hu.t_bond.homecontroller.q.onClick(Launcher.java:663)
at android.view.View.performClick(View.java:4789)
at android.view.View$PerformClick.run(View.java:19881)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]
at java.lang.Class.getConstructor(Class.java:531)
at java.lang.Class.getConstructor(Class.java:495)
at android.support.v7.preference.p.a(PreferenceInflater.java:248)
at android.support.v7.preference.p.a(PreferenceInflater.java:280)
at android.support.v7.preference.p.b(PreferenceInflater.java:289)
at android.support.v7.preference.p.a(PreferenceInflater.java:161)
at android.support.v7.preference.p.a(PreferenceInflater.java:117)
at android.support.v7.preference.q.a(PreferenceManager.java:115)
at android.support.v7.preference.j.b(PreferenceFragmentCompat.java:366)
at hu.t_bond.homecontroller.b.a.d(ApplicationSettingsFragment.java:18)
at android.support.v4.b.o.h(Fragment.java:1942)
at android.support.v4.b.ac.a(FragmentManager.java:1040)
at android.support.v4.b.ac.b(FragmentManager.java:926)
at android.support.v4.b.o.c(Fragment.java:882)
at android.support.v4.b.an.b(FragmentStatePagerAdapter.java:152)
at android.support.v4.view.ViewPager.a(ViewPager.java:1104)
at android.support.v4.view.ViewPager.a(ViewPager.java:552)
at android.support.v4.view.ViewPager.a(ViewPager.java:514)
at android.support.v4.view.ViewPager.b(ViewPager.java:946)
at android.support.v4.view.dw.onChanged(ViewPager.java:2910)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.bo.c(PagerAdapter.java:276)
at hu.t_bond.homecontroller.w.c(Launcher.java:948)
at hu.t_bond.homecontroller.Launcher.a(Launcher.java:521)
at hu.t_bond.homecontroller.q.onClick(Launcher.java:663)
at android.view.View.performClick(View.java:4789)
at android.view.View$PerformClick.run(View.java:19881)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
我使用的是最新的库：
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.android.support:preference-v7:23.1.0'
有人可以告诉我我做错了什么吗？谢谢
尝试在您的 java 代码中添加此构造函数：
PreferenceFragmentCompat(){
this.super();
// a code
}
因为你导入了android.support.v7.preference.PreferenceFragmentCompat，所以你需要<android.support.v7.preference.PreferenceScreen .../>和<android.support.v7.preference.CheckBoxPreference .../>。它看起来像这样：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.preference.CheckBoxPreference
android:key="AutoUpdatesEnabled"
android:title="@string/auto_updates_enabled"
android:summary="@string/auto_updates_enabled_description"
android:defaultValue="true" />
</android.support.v7.preference.PreferenceScreen>
有关这些的更多信息 new preference types v7 支持库支持。
编辑
而不是重写默认的 onCreate(Bundle) 方法，但你应该只重写 onCreatePreferences(Bundle, String):
@Override
public void onCreatePreferences(Bundle bundle, String s) {
addPreferencesFromResource(R.xml.preferences);
}
OP 说他在构建 APK 文件时使用了 ProGuard。
如 this 错误报告所述
Make sure your proguard configuration contains a line like this:
-keep public class * extends android.support.v7.preference.Preference
这可能是问题所在，虽然我不确定。
修复了最新 androidx 的所有混淆器问题
-keep public class * extends androidx.preference.* { *;}